Lubricator and piston-rod packing.



Patented Aug. 7,1900.

W. B. ERB.

LUBRICATOR AND PISTON ROD PACKING.`

` (Application led Apr. 19, 1899.) (No Model.) Y

l? 5MM.

E E20 292 06722507. W IW. m MM 634, @mi

m www NITED STATES PATENT Ormea.

WILLIAM B. ERB, OF CHICAGO, ILLINOIS.

, LUBRI'CATOR AND PlsToN-ROD PACKING.

SPECIFICATION forming part of Letters'latent No. 655,212, dated August 7, 1900.

Original application filed December 10I 1897, Serial No. 661,422;Y Divided and this application iiled April 19, 1899.' Serial No.

. 7131685. (No model.)

T0 a/ZZ whom it may concern: p I

Be it known that LWILLIAM B. ERB, a citizen of the United States, residing at Chicago, county of Cook,'and State of Illinois, have invented certain new and useful Improvements in a Lubricator and Piston-Rod Packing for Air-Compressor, Steam-Pump, or other Direct-Actin g Engines, which are fully set forth in the following specification, reference being had to the accompanying drawings, forming a part thereof.

This invention is a d ivisionof my application, Serial No. 661,422, for steam-motor, filed December 10, 1897.`

In the drawings I have illustrated the application of my invention to a steam-pump.

Figure 1 is anV axial section through the steam cylinder and water cylinder 'of a a detail axialsection of the proximate por` tions of the two cylinders and the piston-rod and other parts located between them, showing a modied form of the stuffing-box and rod-housing connections between the cylinder-heads. Fig. 4 is a section similar to Fig. 3, showing further modification.

In the drawings, Anis the steam-cylinder.

Bis the piston; B' the piston rod or stem.

C is the pump-piston. f

C is the pump body or cylinder.

D is a Vrigidn frame comprising Vthe proximate heads or ends of the cylinders and serving toconnectV the two together and having guide-bearing bosses D10 D20 on the engine and pump cylinder heads D' and D2, respectively, for the piston-rod B.

E E are exteriorly-threaded sleeves onthe piston-rod B', connected by a right-and-left nut E and extending into the bosses D10 D20- threaded sleevesbefore they are connected by the coupling E' and operate to limit the `thrust of said sleeves into the stuffing-boxes, respectively, the nuts coming into contact a Vbody of oil, and is thus kept constantly lu-y vbricated.

I do not limit myself to constructing th stuffing-boxes on the proximate heads of the `cylinders in the manner shown in` the leading-'igures--that is, with the moving element of the stuing-box intruded into the cavity provided for the packing. On the contrary, such stuffing-boxes may be made Ain the more 4customary form of a cap, which encompasses the end of the boss, as illustrated in Fig., 3 such cap being therein indicated by reference-letter EL. When this form of movable member for the stuling-box is employed, the stop to limit the compression of the packing is necessarily applied outside the boss instead of outside the sleeve. Such stops are represented by the letters c2 on Fig. 3f Instead of merely telesccping with the b0ssesasin the forms illustrated, the movable membery of the stuffing-boxes may be screwed into or 'onto' the bosses, respectively, which constitute the fixed member of the box; but in that.

event the coupling neednot be connected by right and left threads to the sleeves, respectively, but all the threads may be either right-hand or left-hand, as desired. Such a structure is illustrated in Fig. 4, in which I have shown the movable member of the stuffing-boxes in the form of a cap which is screwed outside of the boss, whichconstitutes the xed member.

In any of the forms illustrated it maybe found desirable to provide against leakage of oil through the threads of the coupling B', and for this purpose stuffing-boxes A4 A4 of suitable construction may be applied to the opposite ends of the coupling.

IOO

It will beevident that whatever be the form of construction in detail the two sleeves must be so constructed with relation to the coupling that they can be run into the latter far enough so that the entire structure comprised of the three parts-to wit, the two sleeves and the couplingshall not exceed in length the distance between the proximate ends of the bosses on the heads of the cylinders.

l. In a pressure-Huid motor, in which the reciprocating piston of the motor operates a reciprocating piston in a chamber where the work is done;A closed connection between the motor-piston chamber and the secondary chamber, comprising stuffing-boxes on the proximate heads of such chambers respectively, each such stuffing-box consisting of one part rigid with the head of the chamber, and another part movable with respect thereto to compress the packing; a sleeve which rigidly and adjustably connects said movable parts,'means by which the movable partof each stuiiing-box is at all positions to which it may be. adjusted with respect to the xed member, positively stopped against longitudinal movement toward said fixed member.

2. In a pressure-Huid motor in which the reciprocating piston oi' the motor operates a reciprocating piston in a secondary chamber where the work is done; a closed connection between the motor piston-chamber and the secondary chamber comprising stuffing-boxes on the proximate heads of said chambers respectively, such stuiiing-b'ox consisting of the part rigid with respect to the chamberhead and a second part movable with respect to the iirst to compress the packing; adjustable stops on one of said parts to limit the compressing movem ent,and a coupling-sleeve connecting said two movable parts encompassingV the piston-,rod and forming an oilchamber around the latter between the stuifing-boxes.

3. In a pressure-fluid motor, in which the reciprocating piston of the motor operates a reciprocating piston in a secondary chamber where thework is done; a closed connection between the motor piston-chamber and the secondary chamber, comprising stuffingboxes on the proximate heads of such chambers respectively, and a right and leftthreadl ed coupling-sleeve connecting the vmovable parts of such stuffing-boxes respectively and encompassing the piston-rod between them and forming an oil-reservoir around them; and means by which the movable part of each `such stuffing-box is, at all positions to which 'it may be adjusted with respect to4 the fixed member, positively stopped against longitudinal movement toward said members.

4. In a pressure-duid motor in which the reciprocating piston operates; a reciprocating piston in a secondary chamber where the `work is done; a closed connection between the motor piston-chamber and the secondary chamber consisting of stuffing-boxes on the ,proximate headsof said chambers; sleeves vwhere the work is done; a closed connection i between the motor piston-chamber andthe secondary chamber, comprising stuffingyboxes on the proximate heads of` such chamyber; the sleeves, E E intruded into such stuffing? boxes respectively, and oppositely threaded; a right-and-left interiorly-threaded coupling, E', screwed onto theV proximate ends of said sleeves and comprising an oilchamber between the intruded ends of the sleeves; and adjustable stops on such sleeves vinto'the boxes respectively; whereby both `sleeves are positively stopped against longitudinal movement in both directions at all positions to which they may be adjusted withrespect to their boxes. l

In testimony whereof I have hereunto set my hand, in the presence of two witnesses, at Chicago, Illinois, this 14th day of April, 1899.

Y B. ERB.

Witnesses: Y Y

CEAS. S. BURTON, JEAN'ELLIOTT. 

